i have a leisure rangemaster 110 double oven in green.
my clock constantly says auto and wont let me ignite the ovens. when it finally starts flashing i press reset and it wont stop flashing then after a while it stops flashing and says auto again.
I don`t know this particular model but on several cookers that I have used in the past , to change from Auto to Manual on the Timer you had to press 2 buttons at the same time. Also try switching it off then on again.